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References: [ +from:n4zr@comcast.net: 55 ]

Total 55 documents matching your query.

41. Re: Topband: TI9A QSO DL8LAS (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Wed, 5 Feb 2020 21:33:00 -0500
As my grandmother used to say, "Patience is a virtue." He is very loud tonight, was working EU, switched to working NA about half an hour ago (0200Z) 73, Pete N4ZR Check out the Reverse Beacon Networ
/archives//html/Topband/2020-02/msg00013.html (8,299 bytes)

42. Topband: T-loaded vertical (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Tue, 18 Feb 2020 11:45:27 -0500
I keep seeing references to people using symmetrical wire top loading instead of the single wire of an inverted L.  My question is how to calculate the appropriate length for the two top-loading wire
/archives//html/Topband/2020-02/msg00159.html (6,539 bytes)

43. Re: Topband: Rotator Potentiometer shunt fed twr (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Tue, 25 Aug 2020 11:03:20 -0400
Andy, I had two Yeasu rotators on my shunt-fed tower, one at 62 feet and one at 97 feet, for about 15 years and never had trouble, although I was just running 100 watts on 160 73, Pete N4ZR Check out
/archives//html/Topband/2020-08/msg00060.html (9,866 bytes)

44. Topband: K9AY Loop Question (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Thu, 14 Jan 2021 21:23:54 -0500
I'm in the process of putting up a K9AY loop, using the Array Solutions/Wolf RF control boxes.  I had the antenna up last year but it didn't seem to work very well, and I'm looking for suggestions. 
/archives//html/Topband/2021-01/msg00141.html (7,528 bytes)

45. Topband: K9AY Loop Question (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Fri, 15 Jan 2021 14:19:22 -0500
Thank you to everyone who replied to my queries - very useful!  I think I have what I need, except for a way to keep my hands warm while working on it! -- 73, Pete N4ZR Check out the new Reverse Beac
/archives//html/Topband/2021-01/msg00151.html (6,959 bytes)

46. Topband: K9AY Loop Proximity to Structures (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Sun, 24 Jan 2021 09:26:08 -0500
When I put up my K9AY loop, it was convenient to do so at a location in my back yard where I already had a stub of tubing (from a defunct birdhouse) protruding above ground.  I didn't think about it
/archives//html/Topband/2021-01/msg00204.html (7,083 bytes)

47. Re: Topband: K9AY Loop Proximity to Structures (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Sun, 24 Jan 2021 11:41:16 -0500
Thanks, all. 73, Pete N4ZR Check out the new Reverse Beacon Network web server at <http://beta.reversebeacon.net>. For spots, please use your favorite "retail" DX cluster. There are certainly buzzes
/archives//html/Topband/2021-01/msg00207.html (10,543 bytes)

48. Topband: New Inv-L Questions (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Fri, 12 Mar 2021 17:06:24 -0500
I have just finished replacing my 1/4 wave 160-M inverted L, which broke this winter at the bend. It has 8 ca. 70-foot on the ground radials.  I measured the R and X at the feedpoint with a RigExport
/archives//html/Topband/2021-03/msg00119.html (7,272 bytes)

49. Topband: Elementary Inverted L questions (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Thu, 25 Mar 2021 11:07:07 -0400
I have been trying to replace my inverted L, which broke a few weeks ago, and am having all sorts of puzzlements. Please be kind - I was a history major. 1.  The inverted L broke at the turn, so I we
/archives//html/Topband/2021-03/msg00160.html (8,328 bytes)

50. Re: Topband: Elementary Inverted L questions (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Thu, 25 Mar 2021 14:39:34 -0400
Thanks to everyone who has replied so far, and apologies - I did a lousy job of describing the antenna.  First off - I set out to make it 1/4 wave (approximately 128 feet) long, and the starting leng
/archives//html/Topband/2021-03/msg00166.html (11,715 bytes)

51. Re: Topband: Elementary Inverted L questions (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Thu, 25 Mar 2021 15:56:13 -0400
Jim, ignorant question - at X=0, isn't the resistive component also the impedance? 73, Pete N4ZR Check out the new Reverse Beacon Network web server at <http://beta.reversebeacon.net>. For spots, ple
/archives//html/Topband/2021-03/msg00169.html (9,775 bytes)

52. Topband: Inverted L - I surrender (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Thu, 25 Mar 2021 22:15:19 -0400
I'm going to take the antenna back down tomorrow, test to be sure that there's nothing freaky like a break in the wire, and then take it and my K9AY loop in for the season.  Mowing starts in another
/archives//html/Topband/2021-03/msg00177.html (6,893 bytes)

53. Topband: Dumb mistakes was: "Inverted L Questions" (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Fri, 26 Mar 2021 10:21:30 -0400
OK, I did it again. Discovered that I had not connected my radial field to the ground side of my inverted L feedpoint.  It was working just against a single 8-foot ground rod.  The difference is star
/archives//html/Topband/2021-03/msg00181.html (7,068 bytes)

54. Topband: Ground connection for series-connected RG-400/#31 common-mode chokes (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Mon, 12 Apr 2021 15:32:25 -0400
I've just finished winding two 17-turn RG-400 common mode chokes on #31 cores.  My thought is to series-connect these for adequate power handling at the base of an inverted L on 160M. My question is,
/archives//html/Topband/2021-04/msg00069.html (7,182 bytes)

55. Topband: RX loop antenna RX protector (score: 1)
Author: N4ZR <n4zr@comcast.net>
Date: Sun, 6 Jun 2021 09:49:36 -0400
I recently saw, in an e-mail from someone, a reference to a commercial device designed to protect a receiver on a magnetic loop antenna.  IIRC, the device uses PTT from a transceiver to disconnect an
/archives//html/Topband/2021-06/msg00016.html (6,885 bytes)


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